Computer Reliability

Question 1

Does a computer always give the correct answer?

Answer 1

• No

Question 2

Canada’s worst IT disaster

Answer 2

• Therac-25
• Three deaths

Question 3

Data reliability assessment

Answer 3

• Assessments of reliability made in the broader context of the particular characteristics of your research project and the risk associated with the possibility of using insufficiently reliable data

Question 4

Corroborating evidence in a data reliability assessment

Answer 4

• This refers to independent evidence that supports information in a database or derived from one. Such evidence, if available, can be found in alternative databases or expert views. Corroborating evidence is unique to each review, and its strength - or persuasiveness - varies.

Question 5

Risk-level assessment of data

Answer 5

• Risk is the likelihood that using data of questionable reliability could have substantial negative consequences on the decisions of policymakers and others. To do a risk assessment, consider the following risk conditions, in which the data

Question 6

Data testing:

Answer 6

• Can be done by applying logical tests to electronic data files or paper copies of reports, looking for inconsistencies in the data.

Question 7

Billing errors in computer systems are caused by:

Answer 7

• Complex systems.
• Operator error.

Question 8

Store price accuracy

Answer 8

• Up to 10% in error

Question 9

Free and open source software

Answer 9

• Freeware
• Shareware
• Open source

Question 10

Software copyright

Answer 10

• Proprietary software
• Free and open source software